Tin with a jamming slip-on cover



June 29, 1937. GUNZEL 2,085,358

TIN WITH A JAMMING SLIP-ON COVER Filed July 30, 1934 covers for tin cans. tion resides in the provision of a removable cover for a tin can, 5 efiiciently than known a cover which can be without the employment of the conventional cutting types of can-openers. ers are used, there is great danger to the operator, and wounds are common occurrences. the top of the can has been allowed to become dirty, there is the added danger of infection.

be lowing description thereof as illustrated in the accompanying drawing, in which:

Patented June 29, E937 attests Rudolf Giinzel, Hamburg,

Germany, assignor to Wilhelm Valentin Sippell, The Hague, Netherlands Application July 30, 1934, Serial No. 737,663

En Germany 1 Claim.

The present invention relates to removable The essence of the invenwhich closes the can more covers.

The chief drawback of known removable covers is the fact that they cannot be used on cans destined to contain perishable food products or Thus, it will be seen that one of the objects Another object of the invention is to provide removed quite simply and When such can-openadapted to be pressed by small cuts are located therein, said These and other features of the invention will best understood and appreciated from the folof a preferred embodiment Fig. l is a lateral cross-section of a can and cover, sections of both members being cut away, and

Fig. 2 is a View in perspective of a fragment a can with its cover placed thereon.

August 2, 1933 When the cover 3 is to l, a packing 5 of rubber is bead 2. The function of the be applied to the can placed on top of the packing 5 is conventional and aids in effecting absolute closing of 15 the can.

The next step is to fit the cover 3 on the can l, it being understood that the rim 8 and the bead l are not at that time in close contact with either the bead 2 or the shank of the can l. When the cover 3 has been fitted on the can I,

the rim 8 and the bead 4 are rolled inwardly against the bead 2 and the shank of the can I. This rolling operation may be carried out by any appropriate tool and does not form a part of the present invention. After the rolling operation has been performed, inspection will show that the rim 8 is in contact with the bead 2, or the packing 5 continuously around the can. This appears clearly in Fig. 1. Over one half of the outer periphery of the bead 2 is closely embraced by the rim 8.

The rolling operation also serves to press the bead i in towards the side Walls of the can I and underneath the rim 8. Thus, the rim 8 and the bead 4 are given the configuration of a reversed S.

The function of the cuts 1 now becomes clear. If the cuts 1 were not provided in the head 4, compression of the bead around the shank of the can would result in the formation of small pleats, since the circumference of the bead is substantially reduced during the rolling operation. The cuts I provide free areas which can take up this reduction.

4 When it is desired to remove the cover 3 from the can i, the sections of the bead 4 between the cuts can be pried outwardly, releasing somewhat the tight embrace of the bead 4 around the can and allowing facile removal of the cover 3.

It is important to note that the cuts 1 are confined to the bead 4. If the cuts 1 extended upwardly into the area of the rim 8, the closed can would not be air and watertight. This would be especially true if internal pressure was built up during a cooking process. The entire purpose of medial depressed portion, an outwardly extending the present invention would then be nullified. peripheral beaded rim, said rim being continuous This invention is not confined to circular cans throughout its area and extending a suflicient disbut can be successfully applied to cans of all tance to securely hold said cover in place, and an shapes. inwardly extending bead formed on the lower 5 It is understood that the invention and many of edge of said rim and disposed in close proximity its attendant advantages will be understood from to the body of said container immediately below the foregoing description, and it is apparent that the bead thereon, said inwardly extending bead various changes may be made in the form, conbeing provided substantially entirely within its struction, and arrangement of the parts without confines with a plurality of cuts of small width, 10 departing from the spirit and scope of the incompared to their distance apart, which cuts are vention, the form hereinbefore described being confined to e bead, give resiliency 190 said merely a f r d embodiment th f inwardly extending bead whereby the latter en- What 1 claim gages the closure tightly but yieldingly about the A metal container having an outwardly extendbead on the container- 15 ing bead at its open end, a removable closure for RUDOLF GUNZEL- the open end of said container, comprising a 

